Evolution: Artificial and Natural Selection

What is the basis of evolution?

• Randomness

• Variation among genes

• Similarities in DNA

• Similarities in phenotype

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Which of the following is NOT one of the main factors that affect the process of evolution?

• overproduction

• variation

• competition

• symbiosis

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When humans select desirable traits to be passed down to offspring

• natural selection

• artificial selection

The change that occurs over long periods of time in the characteristics and diversity of organisms

• natural selection

• artificial selection

• evolution

• acquired characteristics

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The primary difference natural and artificial selection is

• In nature selection the “pressure” comes from the environment; In artificial selection the “pressure” comes from humans (or another species).

• In artificial selection the “pressure” comes from the environment; In natural selection the “pressure” comes from humans (or another species).

• Natural selections is when humans breed the animal; Artificial selection is when humans direct genes directly.

• They are different terms for the same concept.

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When a farmer breeds only his or her best livestock, the process involved is.......

• natural selection

• artificial variation

• artificial selection

• survival of the fittest

Artificial selection is also known as

• natural selection

• selective hearing

• genetic manipulation

• selective breeding

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Artificial Selection is

• a new concept

• discovered by Darwin and used ever since

• used for thousands of years

• a 19th century concept

Which of these is not a benefit of artificial selection.

• Organism can become stronger

• Breeding can be expensive

• Farmers and breeder will have better business.

• Migration

Artificial selection has been a big factor in the evolution of:

• Dogs

• Panda bears

• Snakes

• Jellyfish

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